COMSOL 4.2 Update 3

Released August 18, 2011.

This update corrects several bugs and stability issues in COMSOL 4.2. The update is cumulative; that is, it applies to COMSOL 4.2, COMSOL 4.2 Update 1 and COMSOL 4.2 Update 2. The update includes all updates from the previous Update 1 and Update 2.
Update Details.

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Installation

Check your version

Make sure that you run COMSOL version 4.2.0.150 or later. On the Help menu,
click About COMSOL Multiphysics to check your version. If you have an
earlier build number, contact your COMSOL sales representative to get
the official release of COMSOL 4.2 before you proceed.

Install

Before you proceed with the installation, make sure to exit any running COMSOL process.

Windows

Run the downloaded .exe-file to extract the update to the COMSOL 4.2 installation directory, for
example C:\COMSOL42.

Linux

Copy the downloaded .zip-file to the COMSOL 4.2 installation directory:

cp comsol_4.2.0.228_linux.zip [installdir]/comsol42

where [installdir] is
the root of the installation, for example /usr/local. Unzip it by the
commands:

cd [installdir]/comsol42unzip -o comsol_4.2.0.228_linux.zip

If you have not disabled SELinux, run the following command:

chcon -t textrel_shlib_t [installdir]/comsol42/lib/[platform]/lib*

where platform is glnx86 or glnxa64.

Macintosh

Double-click the downloaded .dmg file to mount the disk image. In the Finder, open the mounted disk and double-click the COMSOL installer icon. Select your COMSOL installation folder, usually called COMSOL42.

Check your installation

Start COMSOL Multiphysics.

On the Help menu, click About COMSOL Multiphysics.

Check that the version number is 4.2.0.228 (If not, the installation did not succeed).

Update Details for Update 3

General

Corrected volume arrow plots for principal stresses.

Data export using grid now works as expected when running client-server.

LiveLink™ for MATLAB®

Microfluidics Module

The Non-Newtonian power law and the Non-Newtonian Carreau model for non-Newtonian flow are now available for users with a license for the Microfluidics Module.

CFD Module

The Inlet Mass flow boundary condition now works as expected.

* = Included in additional update for LiveLink™ for MATLAB®.

** = Included in additional update for the Structural Mechanics Module.

*** = Included in additional update for LiveLink™ for SolidWorks®.

Update Details for Update 1

General

Prescribed Mesh Displacement and Prescribed Mesh Velocity now works correctly for all available coordinate systems.

Moving Mesh interfaces now works correctly for models with multiple geometries.

Frame type setting is now available in all physics interfaces.

Corrected handling of curl elements for axi-symmetric models using the General Form PDE interface.

Improved check for updates.

Lock aspect ratio now works as expected also for image export.

Software rendering now also works on Windows XP 32 bit.

The Report Generator has been updated and extended to include reporting of all applicable model-object classes. The HTML output has been improved and extended in several ways, for example, by the addition of physics equations.